Greetings everyone. We are Mike and Karen from Bountiful, Utah, and recently purchased a new 2012 Shamrock 21SS hybrid. We're getting ready to switch out the bulbs with LED's in the interior lighting fixtures, and have come across a small snag that our user manual doesn't cover. Over the dining table is a dome light, and for the life of us we cannot figure out how to remove the glass cover. There is a knob in the center which doesn't budge by rotating, so we don't think that this is what releases it. We have also tried turning the glass globe counter clockwise, but this isn't working either (it turns but doesn't come out). Below is a link to a photo of the fixture. Any thoughts on how to open it up would be appreciated.